- the company revealed that the first ME-GA-powered LNG carrier will enter service in the summer of 2023.
- Each ME-GA engine comes equipped with Exhaust Gas Reduction (EGR) that reduces methane-slip emissions by up to 50%, compared to first-generation, Otto-cycle engines without EGR.
- EGR will enable the ME-GA to meet Tier III requirements in both fuel-oil and gas modes without additional after treatment.
As per an article by Man-es MAN Energy Solutions has announced that its MAN B&W ME-GA engine the latest addition to its dual-fuel portfolio has already won 100 orders since May 2021.
Announcing the launch of the engine and EGR
MAN Energy Solutions has announced that its MAN B&W ME-GA engine – the latest addition to its dual-fuel portfolio – has already won 100 orders since May 2021. Simultaneously, the company revealed that the first ME-GA-powered LNG carrier will enter service in the summer of 2023.
Bjarne Foldager, Senior Vice President and Head of Two-Stroke Business, MAN Energy Solutions, said: “The speed with which the ME-GA has reached this milestone is testament to its broad acceptance by oil majors, charterers, shipyards, ship designers and ship owners as the industry’s preferred, second-generation, Otto-cycle engine for LNG carriers. This achievement adds to the strong foundation and proven track record that MAN Energy Solutions already has for bringing new technologies to the market.”
Each ME-GA engine comes equipped with Exhaust Gas Reduction (EGR) that reduces methane-slip emissions by up to 50%, compared to first-generation, Otto-cycle engines without EGR. The increased focus on methane-slip reduction – as well as other operational/technical benefits – has essentially established EGR as a new standard in contemporary, LNG carrier designs with Otto-cycle engines.
EGR enables the significant reduction of methane slip, while simultaneously improving fuel efficiency in both gas and fuel-oil operation. Ultimately, EGR actively reduces emissions and improves efficiency in both Tier II and Tier III.
MAN Energy Solutions’ proprietary EGR system began development more than a decade ago and was applied to a commercial project for the first time in 2013. Initially focused on achieving NOx Tier III compliance, the system has since matured into a robust, engine-tuning tool that today has accumulated orders for more than 275 engines.
The MAN B&W ME-GA engine delivers a low CAPEX solution aimed at certain vessel types and applications, such as LNG carriers, that are able to use ‘boil-off’ gas as a source of fuel.
Based on the well-proven MAN B&W dual-fuel design with minimal installation requirements, the MAN B&W ME-GA uses an efficient ignition concept and unique gas-admission system that delivers safe and reliable operation.
The ME-GA furthermore features minimal operational costs, simple supply and purging concepts, and low maintenance costs for its fuel-gas supply system. It joins the well-established ME-GI Diesel-cycle engine in MAN Energy Solutions’ two-stroke-engine portfolio, which now offers both low- and high-pressure, dual-fuel solutions for operation on LNG.
About Exhaust Gas Reduction
In November 2020, MAN Energy Solutions announced that it would offer its proprietary EGR system as an emissions solution for the ME-GA. EGR is a NOx-emissions-reduction technique that, beyond emission and performance benefits, also ensures IMO Tier ill compliance in diesel mode for the ME-GA.
The company reports that EGR will enable the ME-GA to reduce specific gas consumption by ~3%, and specific fuel-oil consumption by 5%. It will also significantly reduce methane slip by up to 50%, and improve the stability of the Otto-cycle combustion process. EGR will enable the ME-GA to meet Tier III requirements in both fuel-oil and gas modes without additional aftertreatment.
The ME-GA EGR solution is an engine-integrated design that interacts with the exhaust gas before the turbocharger, and can be integrated into existing engine-room designs since the EGR unit itself does not change the engine footprint. Its design-similarity to that of ME-C engines’ EGR systems will lower its price point, since the supply chain and components are already matured.
The volume requirements of the ME-GA EGR system are also significantly lower with, for example, less pipework required than for low-pressure EGR solutions.
Due to its performance and environmental benefits, each ME-GA engine comes with EGR as standard.
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